BGProcessingTaskRequest not triggered

Hi, I'm trying to test the new BackgroundTasks framework.

* Xcode 11.0 beta 3

* On the simulator, the submit task raises an error

* On my iPhone 7 beta 2, task doesn't be triggered

Here is the steps :

- I checked the "Background Processing" check box in capabilities

- I added com.example.refresh in the Info.plist

<key>BGTaskSchedulerPermittedIdentifiers</key>
  <array>
  <string>com.example.refresh</string>
  </array>

- I put the following code in the application didFinishLaunchingWithOptions :

// Background tasks testing
    if (@available(iOS 13.0, *)) {
        [[BGTaskScheduler sharedScheduler] registerForTaskWithIdentifier:@"com.example.refresh" usingQueue:nil launchHandler:^(__kindof BGTask * _Nonnull task) {
            UILocalNotification *notification = [[UILocalNotification alloc] init];
            notification.fireDate = [NSDate date];
            notification.alertBody = @"YEAH";
            [[UIApplication sharedApplication] presentLocalNotificationNow:notification];
            [task setTaskCompletedWithSuccess:YES];
        }];
        [[BGTaskScheduler sharedScheduler] cancelAllTaskRequests];
        BGProcessingTaskRequest *bgTaskRequest = [[BGProcessingTaskRequest alloc] initWithIdentifier:@"com.example.refresh"];
        NSDate *d = [NSDate date];
        int nbMin = 5;
        [bgTaskRequest setEarliestBeginDate:[d dateByAddingTimeInterval:(nbMin*60)]];
        [bgTaskRequest setRequiresNetworkConnectivity:NO];
        [bgTaskRequest setRequiresExternalPower:NO];
        NSError *e;
        [[BGTaskScheduler sharedScheduler] submitTaskRequest:bgTaskRequest error:&e];
        NSLog(@"ERROR TASK : %@", e);
        NSLog(@"Task planified at %@", [d dateByAddingTimeInterval:(nbMin*60)]);
    } else {
        // Fallback on earlier versions
    }

The notification is never triggered.